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https://github.com/zitadel/zitadel.git
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f680dd934d
* chore: rename package errors to zerrors * rename package errors to gerrors * fix error related linting issues * fix zitadel error assertion * fix gosimple linting issues * fix deprecated linting issues * resolve gci linting issues * fix import structure --------- Co-authored-by: Elio Bischof <elio@zitadel.com>
79 lines
1.8 KiB
Go
79 lines
1.8 KiB
Go
package config
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import (
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"encoding/json"
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"io/ioutil"
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"os"
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"path/filepath"
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"github.com/BurntSushi/toml"
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"sigs.k8s.io/yaml"
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"github.com/zitadel/zitadel/internal/zerrors"
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)
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type ValidatableConfiguration interface {
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Validate() error
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}
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type ReaderFunc func(data []byte, o interface{}) error
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var (
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JSONReader = json.Unmarshal
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TOMLReader = toml.Unmarshal
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YAMLReader = func(data []byte, o interface{}) error { return yaml.Unmarshal(data, o) }
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)
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// Read deserializes each config file to the target obj
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// using a Reader (depending on file extension)
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// env vars are replaced in the config file as well as the file path
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func Read(obj interface{}, configFiles ...string) error {
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for _, cf := range configFiles {
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readerFunc, err := readerFuncForFile(cf)
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if err != nil {
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return err
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}
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if err := readConfigFile(readerFunc, cf, obj); err != nil {
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return err
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}
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}
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if validatable, ok := obj.(ValidatableConfiguration); ok {
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if err := validatable.Validate(); err != nil {
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return err
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}
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}
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return nil
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}
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func readConfigFile(readerFunc ReaderFunc, configFile string, obj interface{}) error {
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configFile = os.ExpandEnv(configFile)
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configStr, err := ioutil.ReadFile(configFile)
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if err != nil {
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return zerrors.ThrowInternalf(err, "CONFI-nJk2a", "failed to read config file %s", configFile)
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}
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configStr = []byte(os.ExpandEnv(string(configStr)))
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if err := readerFunc(configStr, obj); err != nil {
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return zerrors.ThrowInternalf(err, "CONFI-2Mc3c", "error parse config file %s", configFile)
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}
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return nil
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}
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func readerFuncForFile(configFile string) (ReaderFunc, error) {
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ext := filepath.Ext(configFile)
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switch ext {
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case ".yaml", ".yml":
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return YAMLReader, nil
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case ".json":
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return JSONReader, nil
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case ".toml":
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return TOMLReader, nil
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}
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return nil, zerrors.ThrowUnimplementedf(nil, "CONFI-ZLk4u", "file extension (%s) not supported", ext)
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}
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